CN202290731U - Core rod of tube mill - Google Patents
Core rod of tube mill Download PDFInfo
- Publication number
- CN202290731U CN202290731U CN2011203652672U CN201120365267U CN202290731U CN 202290731 U CN202290731 U CN 202290731U CN 2011203652672 U CN2011203652672 U CN 2011203652672U CN 201120365267 U CN201120365267 U CN 201120365267U CN 202290731 U CN202290731 U CN 202290731U
- Authority
- CN
- China
- Prior art keywords
- rod
- connecting rod
- tube mill
- operation bar
- plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a core rod of a tube mill, which comprises the following components: an operation bar, a connecting rod and a tail rod, wherein the operation bar, the connecting rod and the tail rod are successively integrated; an end of the operation bar is connected with the front end of the connecting rod; an end of the tail rod is connected with the back end of the hollow rod through threaded assembling. According to the core rod of the tube mill, the operation bar, the connecting rod and the tail rod can be freely detached. The connecting rod and the tail rod can be used repeatedly. Therefore after the core rod of the tube mill is damaged, the core rod of the tube mill can be reused after detaching the operation bar or the connecting rod down and replacing a new operation bar.
Description
Technical field
The utility model belongs to the pipe mill technical field, especially a kind of mandrel bar.
Background technology
The hot rolling that plug is used to manage is especially answered in the military pipe mill method so-called, and can be used for push bench process and mandrel rolling mill (so-called continuous-rolling unit), the hollow material base of rolling on plug.(this paper hollow core material base is interpreted as the hollow cylinder intermediate products in the tubulation process).The plug head can be circle, or establishes a drawing head with diameter.Some rolls with placing anyhow relatively are right, with wall pad roll extrusion on plug of hollow material base.In whole rolling operations, the plug movable with hollow material base is in the hollow material base, by the temperature heating of material base and rolling process.After the rolling plug is extracted out from hollow material base, cooled off subsequent use.Use another chilled plug subsequently in the operation.The plug of the hollow material base of such rolling, the traction plug that only is used for the rolling in the above of hollow material base with another kind is different.Therefore the diameter of the plug that the sort of plug milling train is used does not contact with hollow material base, and does not absorb radially rolling force less than leading bow I head.For the plug of the above-mentioned type, in its rolling case hardness, grazing, surface quality and indeformable etc. has very high quality requirement.In the rolling operation, plug must can be resisted big radial pressure.The diameter of plug can reach tens centimetres, still becomes solid pole through rolling or forging so far, and the surface is through handling (fine finishining and cure process).Get out the axial hole cooling but chaste tree pass through.There is the expense of production and processing of pole of quality and length (above ten meters) of requirement very high.
The utility model content
The purpose of the utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of mandrel bar is provided, this plug light weight and stable characteristics.
The purpose of the utility model solves through following technical scheme:
This mandrel bar includes the work rod, connecting rod and the foot piece that connect as one successively, said work stick end connecting rod front end, and the foot piece end is connected through the screw thread assembling with the hollow stem rear end.
Further, above-mentioned connecting rod is a hollow stem.
Further, above-mentioned work stick end, connecting rod front end have the pin hole of mutual coupling, have pinboard to be inserted in the pin hole on work rod and the connecting rod and make it to be assembled into one.
The work of the utility model rod and between and can freely split between connecting rod and the foot piece, connecting rod and foot piece are reusable, so behind the utility model rapid wear, to change new work excellent as long as will work rod or connecting rod are pulled down, just can continue use.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is that the A of Fig. 1 is to sectional view.
Wherein: 1 is the work rod; 2 is connecting rod; 3 is foot piece; 4 is pinboard; 5 is screw thread.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
Referring to Fig. 1 and Fig. 2, this of the utility model kind of mandrel bar includes the work rod 1, connecting rod 2 and the foot piece 3 that connect as one successively, and excellent 1 end of working is connected with connecting rod 2 front ends, and foot piece 3 ends are connected through screw thread 5 assemblings with connecting rod 2 rear ends.Connecting rod 2 is a hollow stem.The end of work rod 1 and the front end of connecting rod 2 have the pin hole of mutual coupling, have pinboard 4 to be inserted in the pin hole on work rod (1) and the connecting rod 2 and make it to be assembled into one.
The utility model is not only simple in structure, and the length of work rod 1 has only effective working position of existing former plug long, processes more conveniently, and the heat treatment cost is lower, helps transporting.And the employed mould steel of the utility model has only 1/4th of former plug, has practiced thrift mould steel widely.
Claims (3)
1. mandrel bar; Include the work rod (1), connecting rod (2) and the foot piece (3) that connect as one successively; Said work rod (1) end is connected with connecting rod (2) front end, it is characterized in that: foot piece (3) end is connected through screw thread (5) assembling with connecting rod (2) rear end.
2. mandrel bar according to claim 1 is characterized in that: said connecting rod (2) is a hollow stem.
3. mandrel bar according to claim 1 and 2; It is characterized in that: the end of said work rod (1) and the front end of connecting rod (2) have the pin hole of mutual coupling, have pinboard (4) to be inserted in the pin hole on work rod (1) and the connecting rod (2) and make it to be assembled into one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203652672U CN202290731U (en) | 2011-09-27 | 2011-09-27 | Core rod of tube mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203652672U CN202290731U (en) | 2011-09-27 | 2011-09-27 | Core rod of tube mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202290731U true CN202290731U (en) | 2012-07-04 |
Family
ID=46359712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203652672U Expired - Fee Related CN202290731U (en) | 2011-09-27 | 2011-09-27 | Core rod of tube mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202290731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394511A (en) * | 2013-07-23 | 2013-11-20 | 衡阳华菱钢管有限公司 | Steel pipe rolling method without generation of Pilger bell ends |
-
2011
- 2011-09-27 CN CN2011203652672U patent/CN202290731U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394511A (en) * | 2013-07-23 | 2013-11-20 | 衡阳华菱钢管有限公司 | Steel pipe rolling method without generation of Pilger bell ends |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20120927 |